Hi there,
I have a 10 year old Staffordshire that was having recurring diarrhea. After her Xray showed up nothing and blood work showed calcium and protein deficiency plus raised white blood cells ,we knew there was a pretty major problem absorbing nutrients in her digestive tract,she had also lost a lot of weight.Without surgery and a biopsy ($1400 +) there was no way to know for certain but the vet thought it could be anything from pancreatitis to cancer.Ultimatelyshe was treated with anti-parasites and antibiotics to rule out those as a cause and then a course of steroids to reduce inflammation. The only food she could eat without getting diarrhea was Royal Canin gastro intestinal which of course is ridiculously expensive and here in Canada at least is only sold by vets. After much research I found that it wasnt because this was so low in fat that she could tolerate it but in fact because of the addition of a naturally occuring compound called Zeolite which Royal Canin add to the food. It is listed on their ingredients as Sodium aluminate silica. It works as a powerful anti-diarrheal and has also been tested with some success as an anti carcinogenic (http://www.researchgate.net/publication/11905741_Natural_zeolite_clinoptilolite_new_adjuvant_in_anticancer_therapy). The only other non-prescription dog foods that I can find that contain it are Royal Canin Sensitive digestion and Derma comfort which are available in pet stores.These are more affordable than the gastrointestinal one and do have higher fat and protein levels. You can also buy Zeolite as a food supplement online and that will be my next step.
